Posters

This is something of a specialist medium, which is generally used in support of campaigns using other media. On the other hand, some advertisers, particularly those in brewing and tobacco, have successfully made significant use of the medium; although, to achieve this, they have developed the requisite expertise to make efficient use of its peculiarities.

The main roadside posters are described in terms of how the poster is physically posted on to them (pasted on, one sheet at a time, by a bill-poster); as 16 sheet (the main, 10' x 6'8" size in vertical format) and 48 sheet (10' x 20', in horizontal/landscape format). Those smaller ones, seen in pedestrian areas, are typically four sheet (5' x 3'4"). The best sites are typically reserved for the long-term clients, mainly the brewers and tobacco companies (hence one reason for their success in use of the medium), so that new users may find this a relatively unattractive medium.

This industry is also known as Out of Home Media. However, this category is not limited to posters and billboards. It may involve the use of media space in airports, malls, convenience stores, etc., and it could even tie into guerilla marketing, a nontraditional approach to advertising that may involve grassroots tactics (e.g. posting branded stickers or static clings to buildings, restrooms, and other surfaces in metropolitan areas).